Device for withdrawing clinkers from coal fires



A ril 3, 1934. N. A. JOHNSON DEVICE FOR WITHDRAWING CLINKERS FROM COALFIRES Filed March 20, 1935 l4- Fig.

Invrrtor-- Nestel K Johnson.

flttorney s.

Patented Apr. 3, 1934 PATENT orrice DEVICE FOR WITHDRAWING CLINKERSFROM: COAL FIRES Nester A. Johnson, Minneapolis, Minn.

Application March 20,

1 Claim.

My invention relates to devices for withdrawing clinker from coal fires,and has for its object to provide a simple easily manipulated devicewhich is cheap to build and can be manually operated to reach in to thefire bed of a furnace either when hot or cold to seize and withdrawmasses of clinker.

The full objects and advantages of my invention will appear inconnection with the detailed.

description thereof, and the novel features of the invention areparticularly pointed out in the claim.

In the drawing, showing the application of my invention,

Fig. 1 is a part sectional plan view of my device. Fig 2 is a partsectional side view of the device. Fig. 3 is a view similar to Fig. 2with the parts ungripped. Fig. 4 is a transverse section on line 4-4 ofFig. 1. Fig. 5 is a longitudinal sectional detail view.

As shown, the body 10 of the device, which will preferably be formed ofa piece of flattened piping, provides a central elongated channel 11 andat one end is split and turned outwardly to provide forked fingers 12and 13. Within the channel 11 formed in the body 10 is a slide 14 formedat its upper end with a loop handle 15 and at its lower end with a hookmember 16 of a roughly semi-circular shape, as clearly shown at 17 inFigs. 2 and 3. The lower part of the cleft between fingers 12 and 13 onthe side away from the fingers is somewhat elongated as indicated at 18and forms a seat for the back of the bar 14, so that when said bar ispulled up against a piece of clinker, as indicated at 19, the back ofthe bar 14 will be forced into the cleft 18 and will hold the 1933,Serial No. 661,779

same wedged until such time as the baris pulled forward for releasingthe piece of clinker grasped, as indicated in Fig. 3.

The advantages of my invention will sufficient- 1y appear in connectionwith the above detail explanation. It is cheap to manufacture, simple inconstruction and for use, and can be made to be sold at a low price. Inoperation one hand grasps the body portion 10 and the other hand isinserted within the loop 15. The hook 16 is projected outwardly and theforked hooks 12, 13 are slid under pieces of clinker which it is desiredto remove. The slide 14 is then pulled forward to cause the hook portion16 to engage the clinker and jam it between said hook portion 16 and theforked hooks 12, 13. This will have the effect of pushing the bar 14back against the elongated opening 18, which will wedge the partstogether while the clinker is being withdrawn from the furnace, anduntil the same is released by pushing the bar 14 forward.

I claim:

A clinker extractor comprising a flattened tube having an elongatedslideway therein, hook members on the front of said tube, a fiat barmounted for non-rotative sliding movement in said slideway, a hookmember on the end of said fiat bar for engagement of a piece of clinkerbetween said hook member and said hook members, and a cleft in said tubeat the base of said hook members engageable by an edge of said flat barand serving to hold the bar in wedged condition when the clinker isgripped between the hook member and the hook members.

NESTER A. JOHNSON.

